Crushed Stone Calculator

Calculate the exact amount of crushed stone needed for your driveway, base layer, or landscaping project. Get instant estimates in tons, cubic yards, and standard bags.

Length feet Please enter a positive number

Width feet Please enter a positive number

Depth inches Standard depth is 4 inches for driveways Please enter a valid depth

Calculation Results

Crushed stone needed

— tons

Based on a standard density of 2,800 lbs per cubic yard.

How to use this crushed stone calculator

Measure your project area

Input the length and width of your driveway, pathway, or patio base in feet. For odd shapes, estimate as a rectangle to ensure slightly extra material.

Determine the depth

Enter the thickness of the stone layer in inches. For a standard gravel driveway or concrete base, 4 inches is typical. Heavy-duty driveways may require 6+ inches.

Review the material list

The tool automatically calculates the required tons and cubic yards for a bulk delivery quote, alongside the number of standard bags for smaller repairs.

Crushed Stone Tonnage by Coverage Area

Coverage Area	Depth (Thickness)	Cubic Yards	Tons Required
50 sq ft	2 inches	0.31 yd³	0.43 Tons
50 sq ft	3 inches	0.46 yd³	0.65 Tons
50 sq ft	4 inches	0.62 yd³	0.86 Tons
50 sq ft	6 inches	0.93 yd³	1.30 Tons
100 sq ft	2 inches	0.62 yd³	0.86 Tons
100 sq ft	3 inches	0.93 yd³	1.30 Tons
100 sq ft	4 inches	1.23 yd³	1.73 Tons
100 sq ft	6 inches	1.85 yd³	2.59 Tons
200 sq ft	2 inches	1.23 yd³	1.73 Tons
200 sq ft	3 inches	1.85 yd³	2.59 Tons
200 sq ft	4 inches	2.47 yd³	3.46 Tons
200 sq ft	6 inches	3.70 yd³	5.19 Tons
300 sq ft	2 inches	1.85 yd³	2.59 Tons
300 sq ft	3 inches	2.78 yd³	3.89 Tons
300 sq ft	4 inches	3.70 yd³	5.19 Tons
300 sq ft	6 inches	5.56 yd³	7.78 Tons
400 sq ft	2 inches	2.47 yd³	3.46 Tons
400 sq ft	3 inches	3.70 yd³	5.19 Tons
400 sq ft	4 inches	4.94 yd³	6.91 Tons
400 sq ft	6 inches	7.41 yd³	10.37 Tons
500 sq ft	2 inches	3.09 yd³	4.32 Tons
500 sq ft	3 inches	4.63 yd³	6.48 Tons
500 sq ft	4 inches	6.17 yd³	8.64 Tons
500 sq ft	6 inches	9.26 yd³	12.96 Tons
1000 sq ft	2 inches	6.17 yd³	8.64 Tons
1000 sq ft	3 inches	9.26 yd³	12.96 Tons
1000 sq ft	4 inches	12.35 yd³	17.28 Tons
1000 sq ft	6 inches	18.52 yd³	25.93 Tons

Frequently asked questions

How much crushed stone do I need for a 10x10 area?

For a 10x10 area at a standard depth of 4 inches, you need approximately 1.23 cubic yards, which is about 1.73 tons of crushed stone. Use this crushed stone calculator for precise estimates tailored to your dimensions.

How deep should crushed stone be for a driveway?

For a standard residential driveway holding passenger cars, a depth of 4 inches is generally sufficient if the subsoil is firm. If the ground is soft or if you are expecting heavy trucks and RVs, a depth of 6 to 8 inches is strongly recommended to prevent rutting.

How much does a cubic yard of crushed stone weigh?

A cubic yard of solid crushed stone (such as #57 stone) typically weighs around 2,800 pounds, or 1.4 tons. Keep in mind that different sizes and types of stone (like finer crusher run with stone dust) may pack tighter and weigh slightly more.

What is the best type of crushed stone for a driveway?

A popular choice is "Crusher Run" (or modified stone), which includes both angular crushed rock and stone dust. The dust acts as a natural binding agent, locking the rocks together and forming a hard, compact surface that resists erosion better than clean, washed stone.

About this calculator

This crushed stone calculator helps contractors and homeowners quickly estimate the exact material quantities needed for base layers, driveways, and construction fill. Purchasing bulk stone by the ton or cubic yard can be tricky to visualize, so we handle the dimensional conversion for you.

The calculations utilize the standard weight density for angular crushed stone:

Volume (Cubic Feet) = Length (ft) × Width (ft) × (Depth (in) ÷ 12)
Volume (Cubic Yards) = Cubic Feet ÷ 27

Tons Needed = Cubic Yards × 1.4
Bags Needed = Cubic Feet ÷ 0.5 (assuming standard 0.5 cu ft bags)

We strongly recommend calculating a 5% to 10% waste and compaction buffer. When you apply a plate compactor to crushed stone, it compresses significantly. If you order the exact raw mathematical volume, you will likely fall short of your target finished depth.